CVE-2018-6260 in Graphics Driver
Summary
by MITRE
NVIDIA graphics driver contains a vulnerability that may allow access to application data processed on the GPU through a side channel exposed by the GPU performance counters. Local user access is required. This is not a network or remote attack vector.
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Analysis
by VulDB Data Team • 06/06/2023
The vulnerability identified as CVE-2018-6260 resides within NVIDIA graphics drivers and represents a significant side-channel attack vector that exploits GPU performance counters to potentially access application data processed on the graphics processing unit. This flaw demonstrates how modern hardware components can inadvertently expose sensitive information through seemingly benign performance monitoring mechanisms. The vulnerability specifically affects systems where NVIDIA graphics drivers are installed and requires local user access to exploit, establishing it as a local privilege escalation or data exposure threat rather than a remote network attack vector. The security implications are particularly concerning given the widespread use of NVIDIA graphics hardware across enterprise and consumer environments.
The technical implementation of this vulnerability stems from how NVIDIA graphics drivers expose performance counter information through GPU registers and memory locations. These performance counters are designed to provide system administrators and developers with insights into GPU utilization, execution times, and other performance metrics. However, the implementation contains a flaw where these counters can be manipulated or accessed in ways that reveal information about data being processed on the GPU. The side-channel exposure occurs because the performance monitoring infrastructure does not adequately isolate sensitive data processing from the counter mechanisms, allowing an attacker with local access to potentially correlate performance data with application data patterns. This type of vulnerability aligns with CWE-203, which describes "Observable Behavior Difference" and represents a classic example of information leakage through side channels.
The operational impact of CVE-2018-6260 extends beyond simple data exposure as it can potentially enable sophisticated attacks against applications running on systems with vulnerable NVIDIA drivers. Attackers with local access can leverage this vulnerability to extract sensitive information such as cryptographic keys, passwords, or other confidential data that may be processed on the GPU. The attack requires local user access but does not necessitate elevated privileges, making it particularly dangerous in multi-user environments where users may have legitimate access to system resources. The vulnerability affects a wide range of NVIDIA graphics drivers and hardware configurations, including various GeForce, Quadro, and Tesla series products, creating a broad attack surface across both consumer and enterprise markets. This makes the vulnerability particularly concerning from an enterprise security perspective where GPU acceleration is increasingly common in database processing, machine learning, and cryptographic operations.
Mitigation strategies for CVE-2018-6260 primarily focus on updating NVIDIA graphics drivers to versions that address the performance counter side-channel exposure. Organizations should prioritize patching affected systems and ensuring that all NVIDIA graphics drivers are updated to the latest stable releases that contain the necessary security fixes. System administrators should also consider implementing additional security controls such as monitoring for unusual performance counter access patterns and restricting local user access to graphics driver interfaces where possible. The vulnerability's local access requirement means that network-based protections are less relevant, but endpoint security solutions that monitor for suspicious local activity and privilege escalation attempts can provide additional layers of defense. Security teams should also conduct vulnerability assessments to identify systems running affected NVIDIA driver versions and prioritize remediation efforts based on the sensitivity of data processed on those systems. This vulnerability serves as a reminder of the importance of considering side-channel attacks in security assessments and highlights the need for comprehensive hardware security reviews that examine not just primary functionality but also auxiliary mechanisms like performance monitoring that may inadvertently expose sensitive information.